Umphumela wesikhala esifile unokufana okuningi e-calisto protocol. I-calisto protocol ayihlotshaniswa nesikhala esifile, okungenani hhayi kumongo wezindaba zazo zangempela noma ip. I-IP emibili izimele ngokuphelele komunye nomunye, kepha kunezizathu ezisobala zokuthi kungani abalandeli benomuzwa wokuthi baxhumekile. Language: Zulu